function calls: direct vs apply vs call vs bind (v23)

Revision 23 of this benchmark created on

Setup

var f = function(){
    return this;
  };
  
  var that = {
    f: f
  };
  
  var bound = f.bind(that);
  
  var slice = Array.prototype.slice;
  Function.prototype.bind2 = function(_this) {
    var _self = this;
    var args = slice.call(arguments, 1);
    if (args.length === 0) {
      return function() {
        if (arguments.length === 0)
          return _self.call(_this);
        else if (arguments.length > 0)
          return _self.apply(_this, args);       
      }
    }
  
    return function() {
      if (arguments.length === 0)
         return _self.apply(_this, args);
  
      var a2 = args.contact(slice.call(arguments));
      return _self.apply(_this, a2);
    }
  }
  
  var bound2 = f.bind2(that);
  
  var name = 'f';

Test runner

Ready to run.

Testing in
TestOps/sec
direct
that.f();
ready
apply
that[name].apply(that);
ready
call
that[name].call(that);
ready
by string
that['f']();
ready
by string (indirect)
that[name]();
ready
direct (local)
f();
ready

Revisions

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